/* Chat polish: Slack-style structure, one spacing scale (4/8/12/16/20), 8px control radius, hairline borders. Loaded after theme-min.css. */
:root{--r-ctl:8px;--r-card:12px;--line-2:#D9DCE1;--hair:rgba(31,35,41,.06);--ring:rgba(51,112,255,.18);--topin:30px}
@media(prefers-color-scheme:dark){:root{--line-2:#3A3D44;--hair:rgba(255,255,255,.06);--ring:rgba(76,141,255,.28)}}

/* ---------- column widths ---------- */
#rail{width:224px;padding:var(--topin) 10px 10px}
#side{width:300px;padding-top:var(--topin)}
#gsb{width:320px}
.sh2{padding:0 20px 12px;font:700 18px var(--f-b);letter-spacing:-.01em;height:38px;display:flex;align-items:center;box-sizing:content-box}
#convs{padding:0 8px 12px}
#rail .rt{padding:0 4px 12px;gap:4px}#rail .rt .wsb{flex:1;min-width:0}#rail .rt .wsb select{width:100%;min-width:0;text-overflow:ellipsis}

/* ---------- rail bottom: status, app row, account chip share one grid ---------- */
#rail #mxst{margin:0;padding:0}
#rail #mxst button,#rail #pwa-row{display:flex;align-items:center;gap:12px;width:100%;height:36px;margin:0 0 2px;padding:0 12px;border:0;border-radius:var(--r-ctl);background:none;color:var(--ink-soft);font:500 13.5px/1 var(--f-b);text-align:left;cursor:pointer;box-sizing:border-box}
#rail #mxst button:hover,#rail #pwa-row:hover{background:rgba(31,35,41,.05);color:var(--ink);border-color:transparent}
@media(prefers-color-scheme:dark){#rail #mxst button:hover,#rail #pwa-row:hover{background:rgba(255,255,255,.06)}}
#mxst button:before{content:"";width:20px;height:20px;flex:none;background:currentColor;opacity:.85;-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='1.6' stroke-linecap='round'%3E%3Ccircle cx='12' cy='12' r='8.5'/%3E%3Cpath d='M8.5 14c1 1.4 2.2 2 3.5 2s2.5-.6 3.5-2'/%3E%3Cpath d='M9.2 9.8h.01M14.8 9.8h.01'/%3E%3C/svg%3E") center/20px no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='1.6' stroke-linecap='round'%3E%3Ccircle cx='12' cy='12' r='8.5'/%3E%3Cpath d='M8.5 14c1 1.4 2.2 2 3.5 2s2.5-.6 3.5-2'/%3E%3Cpath d='M9.2 9.8h.01M14.8 9.8h.01'/%3E%3C/svg%3E") center/20px no-repeat}
#mxst button span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
#pwa-row svg{width:20px;height:20px;flex:none;opacity:.85}#pwa-row span{flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
#rail #me{margin-top:6px;padding:8px 0 0;border-top:1px solid var(--line)}
.mechip{padding:6px 8px 6px 12px;border-radius:var(--r-ctl);gap:12px}.mechip:hover{background:rgba(31,35,41,.05);border-color:transparent;box-shadow:none}
@media(prefers-color-scheme:dark){.mechip:hover{background:rgba(255,255,255,.06)}}
.mechip .mca{width:28px;height:28px;font-size:12px}.mechip b{font:600 13px/1.25 var(--f-b)}.mechip small{font:400 11.5px/1.25 var(--f-b);color:var(--muted)}
.ni{height:36px;padding:0 12px;border-radius:var(--r-ctl);margin-bottom:1px;font-size:13.5px}

/* ---------- conversation list ---------- */
.cv{gap:12px;padding:8px 10px;border-radius:var(--r-ctl);margin-bottom:1px;align-items:center}
.cv .cav{width:40px;height:40px;font-size:16px;border-radius:10px}.cv .cav.rd{border-radius:50%}
.cn{font:600 14px/1.3 var(--f-b);letter-spacing:-.005em}
.ct{font:400 11.5px var(--f-b);color:var(--muted);font-variant-numeric:tabular-nums}
.cbd .r2{font:400 13px/1.35 var(--f-b);color:var(--muted);margin-top:1px}
.cv.unread .cn{font-weight:700}.cv.unread .r2{color:var(--ink-soft);font-weight:500}
.cbd .r2{display:flex;align-items:center;gap:6px}.cbd .r2 .pv{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.cnt{flex:none;min-width:18px;height:18px;padding:0 6px;box-sizing:border-box;border-radius:9px;background:#F5483B;color:#fff;font:600 11px/18px var(--f-b);text-align:center}.cnt.mu{background:var(--muted)}
.cv:hover .cnt,.cv:hover .atm{visibility:hidden}
.cav .ub{font:600 10.5px var(--f-b);min-width:18px;height:18px;line-height:14px;text-align:center;padding:0 5px;top:-6px;right:-6px;box-sizing:border-box}
.cv.on{background:var(--blue-wash)}.cv.on .cn{color:var(--ink)}
@media(prefers-color-scheme:dark){.cv.on{background:#24304D}.cv.on .cav .ub{border-color:#24304D}}
#pgrid{padding:0 12px 12px}

/* ---------- top bar + tabs ---------- */
#head{padding:var(--topin) 20px 12px;gap:12px;box-sizing:content-box;height:38px;align-items:center}
#head .cav{width:38px;height:38px;border-radius:10px}#head .cav.rd{border-radius:50%}
#head h2{font:700 17px/1.2 var(--f-b);letter-spacing:-.01em;max-width:none;min-width:0;flex:0 1 auto}
#hmeta{font:400 12.5px var(--f-b);color:var(--muted);white-space:nowrap}
#head .hm{align-items:center;gap:12px}
#head .hr{gap:4px;align-items:center}
#htabs{padding:0 20px;gap:20px;background:var(--paper);height:40px;align-items:stretch}
#htabs button{padding:0;border-radius:0;font:500 13.5px var(--f-b);color:var(--muted);border-bottom:2px solid transparent;margin-bottom:-1px;height:40px}
#htabs button:hover{color:var(--ink)}#htabs button.on{color:var(--ink);font-weight:600;border-bottom-color:var(--blue)}

/* ---------- messages ---------- */
#msgs{padding:8px 24px 12px}
.day{display:flex;align-items:center;gap:16px;margin:20px 0 8px;font:600 11.5px var(--f-b);letter-spacing:.01em;color:var(--ink-soft)}
.day:before,.day:after{display:block;content:"";flex:1;height:1px;background:var(--line)}
.m{padding:2px 12px;margin:0 -12px;gap:12px;border-radius:var(--r-card)}
.m:not(.cont){margin-top:16px;padding-top:2px}.m.cont{margin-top:2px;padding:0 12px}
.m:hover{background:var(--hair)}
.m .av{width:36px;height:36px;border-radius:50%;font:600 14px var(--f-b);margin-top:2px}
.m .hd{margin-bottom:4px;display:flex;align-items:baseline;gap:8px;line-height:1.2}
.m .n{font:600 14px/1.2 var(--f-b);color:var(--ink)}
.m .t{font:400 11.5px var(--f-b);color:var(--muted);margin:0;font-variant-numeric:tabular-nums}
.m .bot{margin:0;font:600 10px/1 var(--f-b);letter-spacing:.04em;color:var(--ink-soft);background:var(--wash);border:1px solid var(--line);border-radius:4px;padding:2px 5px;align-self:center}
.m .body.bub{padding:8px 12px;font-size:14px;line-height:1.5;border-radius:4px 12px 12px 12px;max-width:min(640px,100%)}
.m.cont .body.bub{border-radius:12px}
.m .body.bub+.body.bub{margin-top:4px}
.m .body.bub.hascard{padding:0}
.tools{top:-16px;right:12px;padding:2px;border-radius:var(--r-ctl);border:1px solid var(--line-2);box-shadow:0 2px 8px rgba(31,35,41,.10);gap:1px;background:var(--paper)}
.tools button{width:28px;height:28px;padding:0;align-items:center;justify-content:center;border-radius:6px}
.tools button svg{width:16px;height:16px}
.tlink{display:flex;width:fit-content;margin-top:6px;gap:8px;padding:4px 10px;border:1px solid var(--line);border-radius:var(--r-ctl);background:var(--paper);font:600 12.5px var(--f-b);color:var(--blue)}
.tlink:hover{text-decoration:none;background:var(--wash);border-color:var(--line-2)}
.tlink span{font-weight:400;color:var(--muted)}
.rx button{border-radius:var(--r-ctl);padding:1px 8px;font:500 12px var(--f-b)}
.rcard{border-radius:var(--r-card)}
.rch{background:var(--blue-wash);color:var(--blue-deep);font:600 14px/1.4 var(--f-b);padding:10px 16px}
@media(prefers-color-scheme:dark){.rch{background:#222C47;color:#A9C2FF}}
#pill{bottom:92px;font:600 12px var(--f-b)}
#mxtyping{padding:0 24px}

/* ---------- composer: flat white box, hairline border, text on top, quiet right-aligned toolbar row ---------- */
#comp{padding:4px 24px 20px}
.cbox{border:1px solid var(--line-2);border-radius:var(--r-card);box-shadow:none;background:var(--paper);transition:border-color .12s}
.cbox:hover{border-color:#C6CAD1}.cbox:focus-within{border-color:#B4BAC4;box-shadow:none}
@media(prefers-color-scheme:dark){.cbox:hover{border-color:#4A4E57}.cbox:focus-within{border-color:#5A5F6A}}
#comp .cbox textarea,.cbox textarea{padding:12px 16px 4px;font:14px/1.55 var(--f-b);min-height:44px;max-height:160px}
.cbox.big textarea{min-height:34vh;max-height:50vh}
.ctool{display:flex;align-items:center;justify-content:flex-start;gap:0;padding:2px 8px 8px}
.ctool .ibtn{width:30px;height:30px;min-width:30px;padding:0;border-radius:6px;display:inline-flex;align-items:center;justify-content:center;flex:none;color:#6B7280;background:transparent}
.ctool .ibtn:hover{background:var(--hair);color:var(--ink)}.ctool .ibtn.on{background:var(--blue-wash);color:var(--blue)}
#comp .ctool .ibtn svg{width:18px;height:18px;stroke-width:1.6}
.ctool .ibtn.aa svg{width:19px;height:19px}
.ctool>a{margin:0 0 0 4px!important}
.ctool .ibtn.aa{margin-left:auto}
.sgrp{display:flex;align-items:center;margin-left:8px;border-radius:7px;overflow:hidden;background:var(--blue);flex:none}
.sgrp .ibtn{border-radius:0;color:#fff;height:28px;background:transparent}.sgrp .ibtn.send{width:36px;min-width:36px;margin:0;background:transparent}.sgrp .ibtn.chev{width:22px;min-width:22px;border-left:1px solid rgba(255,255,255,.4)}
.sgrp .ibtn:hover{background:rgba(0,0,0,.1);color:#fff}
.sgrp .ibtn svg{width:16px!important;height:16px!important;stroke-width:1.8}.sgrp .ibtn.chev svg{width:12px!important;height:12px!important}
.sgrp:has(.send.off){background:#B8CDFF}.sgrp .send.off{background:transparent;color:#fff}
@media(prefers-color-scheme:dark){.sgrp:has(.send.off){background:#2D4577}}
.fbar{display:flex;gap:2px;padding:6px 10px 0}.fbar[hidden]{display:none}.fbar .ibtn{width:28px;height:28px;border-radius:6px;color:#6B7280;background:transparent;border:0;display:inline-flex;align-items:center;justify-content:center}.fbar .ibtn:hover{background:var(--hair);color:var(--ink)}.fbar svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
/* @mention popup */
.atpop{position:fixed;z-index:96;background:var(--paper);border:1px solid var(--line);border-radius:10px;box-shadow:0 12px 32px -8px rgba(31,35,41,.22);padding:4px;max-height:280px;overflow:auto}
.atpop .ati{display:flex;align-items:center;gap:10px;padding:6px 8px;border-radius:6px;cursor:pointer}.atpop .ati.on,.atpop .ati:hover{background:var(--wash)}
.atpop .ata{width:26px;height:26px;border-radius:50%;background:var(--blue);color:#fff;font:600 12px var(--f-b);display:flex;align-items:center;justify-content:center;flex:none}
.atpop .atn{font:500 14px var(--f-b);color:var(--ink);display:flex;flex-direction:column;min-width:0}.atpop small{font:400 11.5px var(--f-b);color:var(--muted)}
.cv .atm{font:700 10px var(--f-b);color:#fff;background:var(--red,#D34C47);border-radius:999px;padding:1px 6px;flex:none;display:inline-flex;align-items:center}.cv .atm.rd{background:var(--green,#0E9E76);padding:2px 5px}.cv .atm svg{width:10px;height:10px}

/* ---------- group settings panel ---------- */
#gsb{background:var(--paper)}
.gs-h{box-sizing:border-box;height:calc(var(--topin) + 51px);padding:var(--topin) 12px 0 20px;border-bottom:1px solid var(--line);font:700 15px var(--f-b);align-items:center}
.gs-h b{font-weight:700}
.gs-h button{background:transparent;border:0;width:32px;height:32px;border-radius:var(--r-ctl);font-size:20px;line-height:1;color:var(--ink-soft);display:flex;align-items:center;justify-content:center}
.gs-h button:hover{background:var(--hair);color:var(--ink)}
.gs-body{padding:0 20px 8px}
.gs-sec{padding:20px 0;border-bottom:1px solid var(--line)}
.gs-sec:last-child{border:0}
.gs-card{gap:14px}.gs-card .cav{width:48px;height:48px;border-radius:12px;font-size:19px}.gs-card .cav.rd{border-radius:50%}
.gs-card b{font:600 16px/1.3 var(--f-b);margin-bottom:2px}
.gs-link{font:500 13px var(--f-b)!important}.gs-link:hover{text-decoration:underline}
.gs-row{font:600 13px/1.2 var(--f-b);color:var(--ink);margin:0 0 12px;letter-spacing:0}
.gs-row span{font:400 13px var(--f-b);color:var(--muted)}
.gs-sec .gs-row:last-child{margin-bottom:0}
.gs-sec .gs-row+.gs-row{margin-top:14px}
.gs-srch{padding:8px 12px;border-radius:var(--r-ctl);border:1px solid var(--line-2);font:14px/20px var(--f-b);margin-bottom:14px;box-sizing:border-box}select.gs-srch{padding-right:28px!important}
.gs-av{gap:8px}.gs-av .cav{width:36px;height:36px;font-size:14px}
.gs-kv{font:400 13px/1.4 var(--f-b);padding:6px 0;color:var(--muted)}.gs-kv b{font-weight:500;color:var(--ink)}
.gs-id{font:500 12px var(--f-m)!important}
.gs-foot{padding:16px 20px;gap:8px;border-top:1px solid var(--line);background:var(--paper)}
.gs-foot .btn{height:36px;border-radius:var(--r-ctl);font:600 13px var(--f-b);padding:0 12px}
.btn.danger{border-color:var(--line-2);color:var(--red-ink);background:transparent}
.btn.danger:hover{background:rgba(211,76,71,.08);border-color:var(--red)}
.btn.danger.fill{background:var(--red);border-color:var(--red);color:#fff}
.btn.danger.fill:hover{background:var(--red-ink)}
.ftab{padding:8px 24px}.ftab .fr{padding:12px 4px}

/* ---------- narrower windows ---------- */
.mechip small{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
/* with the settings panel open the rail folds to icons so the chat keeps room */
@media(min-width:1101px) and (max-width:1380px){
  html:not(.rs-m-e):not(.rs-m-c) body.gsb-on:not(.rs-keep) #rail{width:60px;padding-left:8px;padding-right:8px;align-items:stretch}
  html:not(.rs-m-e):not(.rs-m-c) body.gsb-on:not(.rs-keep) #rail .rt select,html:not(.rs-m-e):not(.rs-m-c) body.gsb-on:not(.rs-keep) #rail .rt>*:not(#acb),html:not(.rs-m-e):not(.rs-m-c) body.gsb-on:not(.rs-keep) #rail .qwrap,html:not(.rs-m-e):not(.rs-m-c) body.gsb-on:not(.rs-keep) #mxst,html:not(.rs-m-e):not(.rs-m-c) body.gsb-on:not(.rs-keep) .mechip .mcn,html:not(.rs-m-e):not(.rs-m-c) body.gsb-on:not(.rs-keep) .mechip i{display:none!important}
  html:not(.rs-m-e):not(.rs-m-c) body.gsb-on:not(.rs-keep) #rail .rt{justify-content:center;padding:0 0 12px}html:not(.rs-m-e):not(.rs-m-c) body.gsb-on:not(.rs-keep) #acb{margin:0}
  html:not(.rs-m-e):not(.rs-m-c) body.gsb-on:not(.rs-keep) .ni{font-size:0;gap:0;justify-content:center;padding:0;position:relative}
  html:not(.rs-m-e):not(.rs-m-c) body.gsb-on:not(.rs-keep) .ni em{position:absolute;top:2px;right:4px;font-size:10px;padding:0 5px;margin:0}
  html:not(.rs-m-e):not(.rs-m-c) body.gsb-on:not(.rs-keep) #pwa-row{justify-content:center;padding:0}html:not(.rs-m-e):not(.rs-m-c) body.gsb-on:not(.rs-keep) #pwa-row span,html:not(.rs-m-e):not(.rs-m-c) body.gsb-on:not(.rs-keep) #pwa-row em{display:none}
  html:not(.rs-m-e):not(.rs-m-c) body.gsb-on:not(.rs-keep) .mechip{justify-content:center;padding:6px 0}
}
@media(min-width:801px) and (max-width:1100px){
  #gsb{position:fixed;top:0;right:0;bottom:0;z-index:40;box-shadow:-12px 0 32px -16px rgba(31,35,41,.28)}
  #side{width:280px}#rail{width:200px}
}

/* ---------- quick reaction row (same shape language as the toolbar) ---------- */
.picker{padding:4px;gap:2px;border-radius:var(--r-card);align-items:center;border:1px solid var(--line-2);box-shadow:0 8px 24px -8px rgba(31,35,41,.25)}
.picker button{width:32px;height:32px;padding:0;border-radius:var(--r-ctl);font-size:19px;line-height:1;display:flex;align-items:center;justify-content:center;font-family:'Apple Color Emoji','Segoe UI Emoji','Noto Color Emoji',sans-serif}
.picker button:last-child:not([onclick*=react]){font:500 18px var(--f-b);color:var(--ink-soft);border-left:1px solid var(--line);border-radius:0 var(--r-ctl) var(--r-ctl) 0;margin-left:2px;width:30px}
.picker button:hover{background:var(--wash)}
#gsb .gs-h button{background:transparent!important}#gsb .gs-h button:hover{background:var(--hair)!important}

/* message-list skeleton while a chat's first page loads */
.skel{padding:18px 20px}.skel .sk{display:flex;gap:12px;margin-bottom:22px}.skel .sk i{width:34px;height:34px;border-radius:50%;flex:none;background:rgba(128,128,128,.16)}
.skel .sk b,.skel .sk u{display:block;height:10px;border-radius:6px;background:rgba(128,128,128,.14);margin-bottom:9px;text-decoration:none}.skel .sk b{width:120px}.skel .sk u{width:min(420px,70%)}.skel .sk u+u{width:min(260px,45%)}
.skel{animation:skp 1.2s ease-in-out infinite}@keyframes skp{50%{opacity:.5}}